Tracking Injections With Laser-Induced FluorescenceAn article from Randy St. Germain, president of Dakota Technologies.

There is increasing interest in injectable remedies including in-situ chemical oxidants (ISCO), solvents to enhance mobility, emulsified vegetable oil (EVO), groundwater tracers, and a host of others. Dakota Technologies has been developing methods of tracking these "injectables" with laser-induced fluorescence (LIF). Read more.

Dye-LIF Field Test

The Dakota Technologies team conducted its first field testing of the Dye-LIF system in Columbus, Ohio, from January 31 through February 2. The crew visited the site of a former commercial dry cleaner where, like so many other former dry cleaning sites, chlorinated solvents had leaked. What kind of results did we see? Click here to find out.

New Software Coming for UVOST, TarGOST Clients

Coming this September, we'll be releasing new log management software for our UVOST and TarGOST LIF clients. For the first time ever, end-consumers (consultants and regulators) will also be able to view, manipulate and manage LIF site data on their own. This ability will help them take further advantage of the wealth of information that only Dakota's LIF technologies can provide.Read more.

Dakota Upgrades 3D LIF Visualization Capabilities

We've upgraded our LIF modeling capabilities from C-Tech's EVS to the more powerful MVS. The upgrade to MVS will allow more control over the model. It will also allow us to deliver 3D models of our client's site to them so they can view/manipulate the model with C-Tech's free 4DIM viewer. This greatly enhances the impact of the models and allows for the stakeholders involved to observe the model from any vantage point, export snapshots at various angles, zoom in/out, etc. Read more.

Guidelines for Submitting LIF Samples

Are you interested in having your DNAPL site characterized by an LIF instrument? We've developed a new set of guidelines for taking samples and sending them to our lab for free analysis. By following these instructions, you can help ensure a prompt response in determining the effectiveness of our tools for characterizing your site.

Over the years, we've answered a lot of questions about LIF technology. Many of them have been the same. Therefore, we've put together five of the top frequently asked questions to clear the air on some common misconceptions. Read more.

Weathering

Weathering and biological processes selectively remove smaller, more soluble, and more readily oxidized PAHs. As a result, LIF logs will show greater relative signal in the higher wavelength, or redder, channels for weathered multi-component samples because the PAHs responsible for the shorter wavelength, or bluer, fluorescence are simply disappearing from the matrix.

After four years of field work, geologist Tom Rudolph finally purchased a new pair of work boots. His effort to help reduce company costs was commended by Dakota Technologies' management. Although Tom really enjoyed the old pair, he feels the new boots will enhance productivity in the field.